Masrur Odinaev, a senior mobile developer at Google, took this photo (on one of the Street View cameras, no less) and posted it to his Google+ page. It shows a fleet of Subaru Imprezas with the special Google camera rigs atop each. Odinaev estimates that there are over 250 cars in total in the Google Street View fleet.

According to photography blog PetaPixel, each car can capture 360-degree images from a height of 2.5 metres, with the imaging unit containing nine directional cameras.